Informal Survey: Are your ducks laying eggs with little or no shell?

Khaki Campbells, welsh harlequins, and rouens (all penned together)
7 campbells, 2 WH, 2 Rouens (campbells are 1 year old, the rest were hatched this Jaunuary)
1-2 soft shelled eggs every week

Definitely more soft shells this year than previous. Not sure why, their diet hasn't changed, their environment is the same, I have no idea why this is happening!
No solution either. I've been feeding oyster shells, but so far it hasn't changed anything.

 

6 Mallards (4 laying females), feeding game bird grower pellets, occasional chopped tomatoes as treats.

They liked to suck in the mud by their pool.

No soft eggs at all. (They only laid for me one year then taken by a mink in one night), so data is for 1 year only.

 

Only have one Magpie hen that has been laying for 8 days....7 eggs, all very firm shells thankfully. I thought for sure we would have issues, but so far there have been none.

 

Breed: Muscovy
Number of Ducks: Over 100 but not sure how many are laying. Too many to keep up with
Number of soft shelled eggs: 0 - I have never had a problem with soft or no shelled eggs.
Comments: I don't have any suggestions. I just feed the layers Flock Raiser with a mixture of BOSS. They also free range and get fruits and vegetables every day.

 

Blue Swedish, 6 ducks and 2 drakes. 5 of the ducks are in their first season and have been laying for about three months now. One laid two soft shelled eggs when she first started but all her subsequent eggs (and all other eggs from the other ducks) have been normal in every way. I also have a 2 year old duck who hasn't come into lay yet.

Mine eat a breeder ration of one of the best quality feeds you can buy here. Plus lots of greens and peas and at least an hour's free range time daily. More on weekends. Swimming water all day in their pens.

 

Indian Runners -

First and second year layers.

Only a very occasional soft shelled egg - most often laid in the evening, no egg the nest day. It seems that they will just drop one early sometimes before the shell coating has been formed. Most common time to happen is when I am penning birds for a show or auction and the constant movement and herding to pick up certain birds will cause a bit of stress.



Utility Pekin

4 years old will lay a soft shelled egg once every two weeks, she is kept in a different area than the Runners- I dont take too much notice of her as I do not incubate her eggs- and collect them once a week as I do let her sit if she goes broody.


Your runners have a great diet Amiga, certainly doesnt sound like they could be deficient.

 

Anconas, 8 hens 2 drakes. 16 months old, mostly. 7-8 eggs a day. Maybe 5 or 6 soft shells total last year. 3-4 so far this year. Feeding free choice Blue Seal Layer and oyster shell, plus pond foraging all day. In the winter they get veggies and sunflower seeds. They're penned at night and usually turned out in the morning by 9 am. Definitely see soft shells when I don't replace the oyster shell.

Amiga I wonder if you might be seeing soft eggs from just one duck, every day? Can you tell at all? Maybe her system is wonky.